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2 way Bi Flex truss rods?

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  • 2 way Bi Flex truss rods?

    I just got a Parkwood PWH2 "hybrid" guitar which is like a thinline LP with two minihumbuckers and piezo saddles in the bridge.

    I'm not familiar with what they call a 2 way biflex truss rod. All you see is a hollow nut on the top which takes a 4mm hex key. What is unusual is that it "snugs" down if you turn it either CW or CCW, although there is a deadband in the middle were the nut is loose. In that position I noticed that I was getting a buzz inside the neck if I fretted the 4th string at the 2nd fret or the 3rd string at the 4th fret. So I suspect that you are supposed to have that nut snugged up CW or CCW. (Once snugged down I believe that additional turning will put pressure on the neck to straighten out or to bow.)

    If anybody can further educate me on this beast it would be appreciated. (I've been going back and forth for about a week trying to get it adjusted right- this with the 011-049 string gauges that they ship it with- of course I always replace the strings before screwing around with the bridge and truss rod. I first tried 009's and 010's but it is kinda like an acoustic so I didn't think that they worked very well.)

    Thanks

    Steve Ahola
    Last edited by Steve A.; 09-07-2008, 09:05 AM.
    The Blue Guitar
    www.blueguitar.org
    Some recordings:
    https://soundcloud.com/sssteeve/sets...e-blue-guitar/
    .

  • #2




    The top rod is stationary while the bottom rod is turned. The adjusting nut is welded to the bottom rod. The front block that the bottom rod passes through is tapped; the other is welded to the rod. When you turn the adjusting nut clockwise the rod compresses, bending the top rod and creating backbow. When you turn the nut counterclockwise the opposite happens: the rod expands, creating forward bow. This is why you feel resistance when turning in either direction.


    Cheers,
    Jack Briggs

    sigpic
    www.briggsguitars.com

    forum.briggsguitars.com

    Comment


    • #3
      Originally posted by jack briggs View Post




      The top rod is stationary while the bottom rod is turned. The adjusting nut is welded to the bottom rod. The front block that the bottom rod passes through is tapped; the other is welded to the rod. When you turn the adjusting nut clockwise the rod compresses, bending the top rod and creating backbow. When you turn the nut counterclockwise the opposite happens: the rod expands, creating forward bow. This is why you feel resistance when turning in either direction.


      Cheers,
      A picture says a thousand words and your post made everything very clear.

      Thanks a mullet, er, a million!

      Steve Ahola
      The Blue Guitar
      www.blueguitar.org
      Some recordings:
      https://soundcloud.com/sssteeve/sets...e-blue-guitar/
      .

      Comment

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